To do this mod you will need a DM4 frame, dm4 board, 2 dm4 solenoid wiring harnesses, a dm4 switch/battery harness, a dm4 membrane pad, 2 board screws, 2 switch screws, and a set of dm4 eyes (if your gun excepts eyes)
A slot needs to be milled into the top front of the frame so that the noid will sit properly (all milling was done by Ken at K&P Csutoms. It is a tight fit and must be done perfectly or the frame will be runed)
A new back frame screw will need to be drilled and tapped into the back of the body
Once this is done the frame can be mounted to the matrix
To complete this mod You will then need to solder the two solenoid harnesses together and then solder the one long harness to your currend solenoid.
Once this is done you can then mount all the items into the frame
EDIT: It has been brought to my attention that the stock DM4/5/C eye set may be to short, so some moding my be required for it to fit.
EDIT 2.0: The same mod'ing can be done to a dn4/5/c UL frame if you want to UL frame your vintage trix